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Standard Test and Programming Language
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<p>JAM / STAPL ("Standard Test and Programming Language") is an <a href="/facts/Altera/66c0Gh0R">Altera</a>-developed standard for <a href="/facts/JTAG/IxRc5rG7">JTAG</a> in-circuit programming of <a href="/facts/Programmable_logic_device/7dIVypm9">programmable logic devices</a> (PLDs). It is defined by JEDEC standard JESD-71. </p><p>STAPL defines a standard <i>.jam</i> file format which supports in-system programmability or configuration of programmable devices. A JTAG device programmer implements a <i>JAM player</i> which reads the file as a set of instructions directing it to program a PLD. </p><p>The standard is supported by multiple PLD and device programmer manufacturers. </p>